Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The beginning of September reveals an average high-temperature of a still tropical 31°C (87.8°F), showing minimal deviation from the previous month. Isulan throughout September, experiences an average nighttime temperature of 21°C (69.8°F).Heat index
For September, the heat index is computed to be a scorching 41°C (105.8°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Know that the heat index computations account for shaded terrains and slight winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
In September, the average relative humidity in Isulan is 81%.Rainfall
In Isulan, Philippines, during September, the rain falls for 25.2 days and regularly aggregates up to 136mm (5.35") of precipitation. Throughout the year, there are 306.7 rainfall days, and 1786mm (70.31") of precipitation is accumulated.Daylight
In September, the average length of the day in Isulan is 12h and 10min.On the first day of September in Isulan, Philippines, sunrise is at 5:34 am and sunset at 5:48 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 5:33 pm PST.
Sunshine
The average sunshine in September is 8.3h.UV index
January, February, June through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 6 in September translates into this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Isulan?
What is the average humidity in September in Isulan?
How many days does it rain in September in Isulan?
How many hours of daylight does Isulan have in September?
When are sunrise and sunset in September in Isulan?
How many hours of sunshine does Isulan have in September?
When is the lowest UV index in Isulan?
How high is the UV index in September in Isulan?
Average temperature in September
Isulan, Philippines
- Average high temperature in September: 31°C
The warmest month (with the highest average high temperature) is April (32.4°C).
The month with the lowest average high temperature is January (30.2°C).
- Average low temperature in September: 21°C
The month with the highest average low temperature is May (21.8°C).
The coldest month (with the lowest average low temperature) is February (20.4°C).
Average pressure in September
Isulan, Philippines
- Average pressure in September: 1010.1mbar
The month with the highest atmospheric pressure is February (1010.7mbar).
The months with the lowest atmospheric pressure are November and December (1009.2mbar).
Average wind speed in September
Isulan, Philippines
- Average wind speed in September: 3.4km/h
The windiest month (with the highest average wind speed) is February (3.8km/h).
The calmest months (with the lowest average wind speed) are May and June (2.9km/h).
Average humidity in September
Isulan, Philippines
- Average humidity in September: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is March (76%).
Average rainfall in September
Isulan, Philippines
- Average rainfall in September: 136mm
The wettest month (with the highest rainfall) is June (235mm).
The driest month (with the least rainfall) is February (75mm).
Average rainfall days in September
Isulan, Philippines
- Average rainfall days in September: 25.2 days
The month with the highest number of rainy days is June (29.7 days).
The month with the least rainy days is February (18.4 days).
Average daylight in September /
Average sunshine in September
Isulan, Philippines
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are March, April, July and December (Average sunshine: 8h and 48min).
The month with the least sunshine is June (Average sunshine: 7h and 48min).
Average sunshine days in September
Isulan, Philippines
- Average sunshine days in September: 4.4 days
The month with the most sunshine days is February (9.2 days).
The month with the least sunshine days is June (0.3 days).
Average UV index in September
Isulan, Philippines
- Average UV index in September: 6
The months with the highest UV index are March, April and May (UV index 7).
The months with the lowest UV index are January, February, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Isulan, Philippines
- Average cloud cover in September: 47
The month with the most cloud cover is July (Cloud cover 54).
The months with the least cloud cover are February and March (Cloud cover 39).
Average visibility in September
Isulan, Philippines
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, August, September, October and December (8km).
The months with the lowest visibility are July and November (7km).
